Simplify by Using Formula : (1 + A) (1 - A) (1 + A2)

Simplify by using formula :
(1 + a) (1 - a) (1 + a²)

Sum

(1 + a) (1 - a) (1 + a²)
= [(1)² - (a)²] (1 + a²)
= (1 - a²) (1 + a²)
(Using identify : (a + b)(a - b) = a² - b²)
= (1)² - (a2)²
= 1 - a⁴.

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Chapter 3 Expansions
Exercise 4.1 | Q 4.5

Simplify the following expressions:

`(x + y - 2z)^2 - x^2 - y^2 - 3z^2 +4xy`

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(4x − 5y) (16x² + 20xy + 25y²)

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Simplify by using formula :
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Simplify:
(1 + x)(1 - x)(1 - x + x²)(1 + x + x²)

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